Air conditioner



FIG. 1 is a bottom, front, and right side perspective view of our designfor an air conditioner;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a backside view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a left side view thereof; and,

FIG. 8 is a perspective view thereof, where lower flaps are open.

We claim the ornamental design for an air conditioner, as shown anddescribed.